Plasticity of animal genome architecture unmasked by rapid evolution of a pelagic tunicate.
نویسندگان
چکیده
Genomes of animals as different as sponges and humans show conservation of global architecture. Here we show that multiple genomic features including transposon diversity, developmental gene repertoire, physical gene order, and intron-exon organization are shattered in the tunicate Oikopleura, belonging to the sister group of vertebrates and retaining chordate morphology. Ancestral architecture of animal genomes can be deeply modified and may therefore be largely nonadaptive. This rapidly evolving animal lineage thus offers unique perspectives on the level of genome plasticity. It also illuminates issues as fundamental as the mechanisms of intron gain.
منابع مشابه
Plasticity of Animal Genome Architecture Unmasked by Rapid Evolution of a Pelagic Tunicate
The DNA used for shotgun sequencing was from sperm of approx. 200 males from a partially inbred line produced in culture conditions, and deriving from natural populations caught in the fjords near Bergen, Norway. Inbreeding consisted in 11 successive brother sister mating beginning from a single pair, and followed by three generations of mass spawning within the line to increase the biomass. Th...
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ورودعنوان ژورنال:
- Science
دوره 330 6009 شماره
صفحات -
تاریخ انتشار 2010